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A jockey must play 14 commercial spots during 1 hour of a radio show. Each commercial is either 30 seconds or

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60 seconds long. If the total commercial time during 1 hour is 11 min, how many 30-second commercials were played that hour? How many 60-second commercials?

How many 30-second commercials were played that hour?

How many 60-second commercials were played that hour?

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  1. 6 30 second commercials = 3 minutes

    8 60 second commercials = 8 minutes

    6 commercials + 8 commercials = 14 commercials

    3 minutes + 8 minutes = 11 minutes

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